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GeForce GTX 780 Ti vs Nvidia Titan X


Intro

The GeForce GTX 780 Ti comes with a GPU core clock speed of 875 MHz, and the 3072 MB of GDDR5 memory is set to run at 1750 MHz through a 384-bit bus. It also is made up of 2880 SPUs, 240 Texture Address Units, and 48 Raster Operation Units.

Compare those specs to the Nvidia Titan X, which has a clock speed of 1417 MHz and a GDDR5X memory speed of 1251 MHz. It also uses a 384-bit bus, and uses a 16 nm design. It is comprised of 3584 SPUs, 224 TAUs, and 96 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

In theory, the Nvidia Titan X should be 46% quicker than the GeForce GTX 780 Ti overall, because of its greater data rate. (explain)

Nvidia Titan X 491520 MB/sec
GeForce GTX 780 Ti 336000 MB/sec
Difference: 155520 (46%)

Texel Rate

The Nvidia Titan X will be a lot (about 51%) better at AF than the GeForce GTX 780 Ti. (explain)

Nvidia Titan X 317408 Mtexels/sec
GeForce GTX 780 Ti 210000 Mtexels/sec
Difference: 107408 (51%)

Pixel Rate

The Nvidia Titan X should be a lot (approximately 224%) more effective at AA than the GeForce GTX 780 Ti, and should be capable of handling higher screen resolutions better. (explain)

Nvidia Titan X 136032 Mpixels/sec
GeForce GTX 780 Ti 42000 Mpixels/sec
Difference: 94032 (224%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

GeForce GTX 780 Ti

Nvidia Titan X

Specifications

Display Specifications

Hide Specifications

Model GeForce GTX 780 Ti Nvidia Titan X
Manufacturer nVidia nVidia
Year November 2013 August 2016
Code Name GK110 GP102-400
Memory 3072 MB 12288 MB
Core Speed 875 MHz 1417 MHz
Memory Speed 7000 MHz 10008 MHz
Power (Max TDP) 250 watts 250 watts
Bandwidth 336000 MB/sec 491520 MB/sec
Texel Rate 210000 Mtexels/sec 317408 Mtexels/sec
Pixel Rate 42000 Mpixels/sec 136032 Mpixels/sec
Unified Shaders 2880 3584
Texture Mapping Units 240 224
Render Output Units 48 96
Bus Type GDDR5 GDDR5X
Bus Width 384-bit 384-bit
Fab Process 28 nm 16 nm
Transistors 7080 million 12000 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.0 DirectX 12.0
OpenGL Version OpenGL 4.4 OpenGL 4.5

Memory Bandwidth: Bandwidth is the max amount of data (in units of megabytes per second) that can be moved across the external memory interface in a second. The number is worked out by multiplying the bus width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

GeForce GTX 780 Ti

Nvidia Titan X

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